So yeah, I've been reading up pretty heavily on the 280 Ackley Improved, basically a 280 Remington with raised shoulders. Performance is said to be close to the 7mm Remington Magnum, with 1/3 less powder and a slimmer casing (aka more mag capacity).

Only problem is, the only manufacturer who chambers for this round is Nosler, and they're practically semi-custom (with prices to match!).

Does anyone else know of some other rifle makers who chamber for this round?